Hi again Paul,
Still having some issues with the EQNs... I had some BC184c's in the mail on the way to me already so I put them in one of the EQNs I have. I also reflowed some joints around the output stage. Whereas before I was getting loud oscillation at the proper bias current, I'm not getting softer noise (around -63dbFS into my interface). It's definitely better now, but I have verified that the issue is coming from the output stage by listening to the positive leg of C48 - here I have no low frequency noise like I do on the output.
To answer your previous question, it doesn't seem that RV4 (the volume trimmer) affects the noise at all.
Since I've now replaced the two BC184cs in the output section, are there any other components around there that may be bad like a noisey resistor or capacitor?
Thank you,
Will